When a kid does wrong, it’s easy for him to blame his parents or society – anyone but himself.But teens say the culprits often should be pointing fingers at themselves. “Parents teach their kids to make good choices,” says Ronnie Brown, 16, from Excel High School. Often, perpetrators like to play dumb, laying fault on violent video games, TV shows, or their parents for being too lax. But those excuses don’t fly with many teens. “The kid knows right from wrong and if they do wrong it’s on them,” says Landon Fitzpatrick, a freshman at the Henderson School. For sure, parents have influence over their child’s actions. Teens say parents need to set clear boundaries of behavior, maintain a strong presence in their kids’ lives, and regularly sit down and talk with them about what they’re up to. However, at the end of the day, the kid is still responsible for his own activities. “It was the child’s choice to break the law,” says 14-year-old Tyler Andrade, from Dorchester.